Frolovite Mineral Data

Frolovite Mineral Data
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General Frolovite Information

Help on Chemical Formula: Chemical Formula: CaB2(OH)8
Help on Composition: Composition: Molecular Weight = 197.76 gm
   Calcium   20.27 %  Ca   28.36 % CaO
   Boron     10.93 %  B    35.20 % B2O3
   Hydrogen   4.08 %  H    36.44 % H2O
   Oxygen    64.72 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaB2(OH)8
Help on Environment: Environment: In a skarn deposit replacing calciborite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Novo-Frolvsk, Turinsk region, Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Frolovite + Pronunciation Say FROLOVITE
Help on Synonym: Synonym: ICSD 20060
  PDF 45-7
 

Frolovite Image

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Frolovite

Comments: Clear to white crystalline frolovite in rock.
Location: Solongo, Republic of Buryatia, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Frolovite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.3686:1:1.4323
Help on Cell Dimensions: Cell Dimensions: a = 7.774, b = 5.68, c = 8.136, Z = 2; alpha = 113.15°, beta = 101.67°, gamma = 107.87° V = 307.89 Den(Calc)= 2.13
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.084(1), 3.858(0.9), 3.471(0.8),
Click Here for Large Frolovite Structure Window Crystal Structure:

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Egorov-Tismenko Y K , Gushchina A E , Shashkin D N , Simonov M A , Belov N V , Doklady Akademii Nauk SSSR , 202 (1972) p.78-80, The crystal structure of frolovite CaB2O4(H2O)4 = Ca(B(OH)4)2

 

Physical Properties of Frolovite

Help on Color: Color: Gray white, White.
Help on Density: Density: 2.14
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Frolovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.255,KPDmeas= 0.2681,KC= 0.2591
Ncalc = 1.55 - 1.58
Help on Optical Data: Optical Data: Biaxial (?), a=1.563, b=1.572, g=1.586, bire=0.0230, 2V(Calc)=80, 2V(Meas)=70.
 

Calculated Properties of Frolovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.32 gm/cc
note: Specific Gravity of Frolovite =2.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEFrolovite = 2.65 barns/electron
U=PEFrolovite x rElectron Density= 6.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Frolovite is Not Radioactive
 

Frolovite Classification
Help on Dana Class: Dana Class: 25.01.03.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.01)Dana Type
  (25.01.03)Dana Group
 
25.01.03.01 Frolovite CaB2(OH)8 P1 1
Help on Strunz Class: Strunz Class: 06.AC.20 06 - BORATES
  06.A - Monoborates
  06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.
 
06.AC.20 Frolovite CaB2(OH)8 P1 1
 

Other Frolovite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Frolovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Frolovite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Frolovite Specimen Label here :

Frolovite

CaB2(OH)8
Dana No: 25.01.03.01 Strunz No: 06.AC.20
Locality:

 

Notes: